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The article deals with possible usage of current missile guidance systems and methods for unmanned aerial systems (UAS). Well known remote control, homing guidance or go onto location in space guidance (GOLIS) systems can be modified for UAS. Especially remote control and homing guidance systems can be used during the approach and landing phase. Mathematical and theoretical models of the systems were...
In this paper, the new structure of non-isolated boost dc-dc converter is considered as achieving maximum power transferring to load from a photovoltaic (PV) power network. To achieving maximum power point (MPPT) of operating mode, the Perturb-and-Observe (P&O) is applied after modeling of other part of this power network such as battery, bidirectional dc-dc converter and proposing new control...
A novel pressure control system based on a centrifugal pump Simulink model is proposed aiming to reduce energy consumption during pump operation. The system developed provides the possibility of power reduction during pressure maintenance with the help of mixed pressure control strategy. To evaluate the system, a series of tests have been conducted that proved that the designed system is more beneficial...
The purpose of this paper is to present a brief comparison between a conventional hexacopter and a cant angle hexacopter. A conventional hexacopter has got all its 6 rotors fixed and thrusted upwards in the body frame which gives it a decoupled 4 DOF motion or a coupled 6 DOF motion. But a cant angle hexacopter has all its six rotors canted at an angle tangentially to the radius of the frame. It provides...
In this paper, we present a synthesis of the fractional order Proportional Integral controller (PIλ) using Characteristic Ratio Assignment (CRA) method. This controller guaranties some step response performances such as setting time, rise time and overshoot. Simulation results show the efficiency of the proposed controller.
Quad copters are VTOL aerial robot systems and has complex dynamics in spite of its simple design. In the present work, a quadcopter of plus configuration is assembled and its flight characteristics are experimentally studied. To stabilize the system during its flight a KK multicopter platform is used. Flight stabilization is done and data of motor input voltage is acquired using a arducopter flight...
In order to enhance the study of the kinematics of any robot arm, parameter design is directed according to certain necessities for the robot, and its forward and inverse kinematics are discussed. The DH convention Method is used to form the kinematical equation of the resultant structure. In addition, the Robotics equations are modeled in MATLAB to create a 3D visual simulation of the robot arm to...
A microgrid (MG) is a cluster of loads and distributed generation units (DG) that are located in a close distance from each other. In a dc MG, the DGs generate a dc voltage and the loads consume power while supplied by a dc voltage. The power sharing amongst DGs is one of the main control issues in dc MGs. Power sharing is conducted in either form of load current or power sharing; however, many of...
A novel buck-boost dc-dc converter with high voltage step-up and step-down ability has been introduced in this paper. There are two switches in this converter, of which the sources are connected together and also connected to the ground of the input voltage source. Hence, there is no need for floating gate driver. In addition, the voltage stress of one of the switches is lower than the existing quadratic...
This paper analysis and compares the different driving techniques for the brushless DC motors (BLDC). First, the conventional block commutation technique used to drive the BLDC is discussed with respect to the produced torque ripple. Second, the modified techniques like the overlap and phase advance techniques discussed as well. Finally, a combined driving technique including the phase advance and...
The modeling and the simulation of triple junction solar cells had been addressed in earlier research works. But there are many new cells with parameters not released by the manufacturers yet. The aim of this paper is to simulate the behavior of a C3MJ+ triple-junction solar cell by determining its J-V characteristics curve and its P-V curve. The maximum voltage, current density and power will be...
In this paper, a PLC controlled simulation of a coupled tank system based on an existing dual-tank educational process control plant is developed. A critical analysis of the plant is carried out in order to obtain all the required parameters to setup the simulated model. Unlike the actual plant, the virtual process control model is not limited to two tanks only but may be reconfigured with ease in...
In this paper, the simulation environment is proposed that enables accurate full-scale investigation of the pressure adjustment for a centrifugal pump. The novel Matlab model is described, the pumping control procedure is explained, and the simulation results are assessed with the help of an experimental pumping test bench. Basing on thorough inspection of the developed software, the offered toolbox...
This paper summarizes the results of a three-phase load flow analysis case study. This work was part of an overall energy systems modeling and analysis effort designed to develop a validated power flow study that facilitates understanding of power flow concepts for the present distribution networks operating in asymmetry conditions. To simplify data collection requirements and illustrate key concepts,...
The article deals with the problems of heat transfer through solids. The calculation of the thermal resistance of the system consisting of several layers of solid materials having different thermal resistances on the intensive calculations and the time. In the first part we law of calorimetry equation. On this basis, we can build a theory of one-dimensional and multi-dimensional differential equation...
Various research, experience and insights of teachers has shown that appropriation of information and communications technology (ICT) lead to improved learning of students and they are also suitable teaching methods. With the rapid advances in technology and the prevalence of various ICT in schools, schools must have thought-out work for good integrating ICT and visualization into the teaching of...
Overcurrent relay is an important relay used to protect transmission and distribution feeders, transformer, bus coupler etc. It can be used as main or backup protection relays. The modeling of overcurrent relay and other protection relays is important in the research on the effects of network parameters and configurations on the operation of these relays. This research deal with modeling and simulation...
The aim of this study is to make simulations with Matlab/Simulink to be used in the production phase of the autoclave in the sterilization unit. Sterilization unit is very important in terms of hospital employees and patients for protecting from infections and accidents. The study examined autoclave equipments that are fabricated based on the EN standards, then mathematical calculations were performed...
Resistor-Inductor-Capacitor (RLC) circuits form the building blocks of most electronic networks today and the evaluation of their behavior is of primary importance. This paper presents MNA-MAT, a MATLAB based analog circuit simulation tools. which uses Modified Nodal Analysis to reduce a SPICE netlist to a system of equations, which yield voltage at and current through specific points in a network...
This article presents a model library of generic components to build virtual Avionics Full Duplex Switched Ethernet (AFDX) networks. The presented library is a blockset for MATLAB/Simulink. The functional behavior of the simulation library's basic building blocks represent the scheduling and routing in AFDX end systems and switches on frame level. The graphical nature of Simulink allows to model AFDX...
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